1 // SPDX-License-Identifier: GPL-2.0+ 2 // Copyright 2017-2021 NXP 3 4 #include <linux/module.h> 5 #include <linux/init.h> 6 #include <linux/slab.h> 7 #include <linux/gpio/consumer.h> 8 #include <linux/of_device.h> 9 #include <linux/i2c.h> 10 #include <linux/of_gpio.h> 11 #include <linux/clk.h> 12 #include <sound/soc.h> 13 #include <sound/pcm_params.h> 14 #include <sound/pcm.h> 15 #include <sound/soc-dapm.h> 16 #include <sound/simple_card_utils.h> 17 18 #include "fsl_sai.h" 19 20 #define IMX_CARD_MCLK_22P5792MHZ 22579200 21 #define IMX_CARD_MCLK_24P576MHZ 24576000 22 23 enum codec_type { 24 CODEC_DUMMY = 0, 25 CODEC_AK5558 = 1, 26 CODEC_AK4458, 27 CODEC_AK4497, 28 CODEC_AK5552, 29 }; 30 31 /* 32 * Mapping LRCK fs and frame width, table 3 & 4 in datasheet 33 * @rmin: min rate 34 * @rmax: max rate 35 * @wmin: min frame ratio 36 * @wmax: max frame ratio 37 */ 38 struct imx_akcodec_fs_mul { 39 unsigned int rmin; 40 unsigned int rmax; 41 unsigned int wmin; 42 unsigned int wmax; 43 }; 44 45 /* 46 * Mapping TDM mode and frame width 47 */ 48 struct imx_akcodec_tdm_fs_mul { 49 unsigned int min; 50 unsigned int max; 51 unsigned int mul; 52 }; 53 54 /* 55 * struct imx_card_plat_data - specific info for codecs 56 * 57 * @fs_mul: ratio of mclk/fs for normal mode 58 * @tdm_fs_mul: ratio of mclk/fs for tdm mode 59 * @support_rates: supported sample rate 60 * @support_tdm_rates: supported sample rate for tdm mode 61 * @support_channels: supported channels 62 * @support_tdm_channels: supported channels for tdm mode 63 * @num_fs_mul: ARRAY_SIZE of fs_mul 64 * @num_tdm_fs_mul: ARRAY_SIZE of tdm_fs_mul 65 * @num_rates: ARRAY_SIZE of support_rates 66 * @num_tdm_rates: ARRAY_SIZE of support_tdm_rates 67 * @num_channels: ARRAY_SIZE of support_channels 68 * @num_tdm_channels: ARRAY_SIZE of support_tdm_channels 69 * @type: codec type 70 */ 71 struct imx_card_plat_data { 72 struct imx_akcodec_fs_mul *fs_mul; 73 struct imx_akcodec_tdm_fs_mul *tdm_fs_mul; 74 const u32 *support_rates; 75 const u32 *support_tdm_rates; 76 const u32 *support_channels; 77 const u32 *support_tdm_channels; 78 unsigned int num_fs_mul; 79 unsigned int num_tdm_fs_mul; 80 unsigned int num_rates; 81 unsigned int num_tdm_rates; 82 unsigned int num_channels; 83 unsigned int num_tdm_channels; 84 unsigned int num_codecs; 85 enum codec_type type; 86 }; 87 88 /* 89 * struct dai_link_data - specific info for dai link 90 * 91 * @slots: slot number 92 * @slot_width: slot width value 93 * @cpu_sysclk_id: sysclk id for cpu dai 94 * @one2one_ratio: true if mclk equal to bclk 95 */ 96 struct dai_link_data { 97 unsigned int slots; 98 unsigned int slot_width; 99 unsigned int cpu_sysclk_id; 100 bool one2one_ratio; 101 }; 102 103 /* 104 * struct imx_card_data - platform device data 105 * 106 * @plat_data: pointer of imx_card_plat_data 107 * @dapm_routes: pointer of dapm_routes 108 * @link_data: private data for dai link 109 * @card: card instance 110 * @num_dapm_routes: number of dapm_routes 111 * @asrc_rate: asrc rates 112 * @asrc_format: asrc format 113 */ 114 struct imx_card_data { 115 struct imx_card_plat_data *plat_data; 116 struct snd_soc_dapm_route *dapm_routes; 117 struct dai_link_data *link_data; 118 struct snd_soc_card card; 119 int num_dapm_routes; 120 u32 asrc_rate; 121 snd_pcm_format_t asrc_format; 122 }; 123 124 static struct imx_akcodec_fs_mul ak4458_fs_mul[] = { 125 /* Normal, < 32kHz */ 126 { .rmin = 8000, .rmax = 24000, .wmin = 256, .wmax = 1024, }, 127 /* Normal, 32kHz */ 128 { .rmin = 32000, .rmax = 32000, .wmin = 256, .wmax = 1024, }, 129 /* Normal */ 130 { .rmin = 44100, .rmax = 48000, .wmin = 256, .wmax = 768, }, 131 /* Double */ 132 { .rmin = 88200, .rmax = 96000, .wmin = 256, .wmax = 512, }, 133 /* Quad */ 134 { .rmin = 176400, .rmax = 192000, .wmin = 128, .wmax = 256, }, 135 /* Oct */ 136 { .rmin = 352800, .rmax = 384000, .wmin = 32, .wmax = 128, }, 137 /* Hex */ 138 { .rmin = 705600, .rmax = 768000, .wmin = 16, .wmax = 64, }, 139 }; 140 141 static struct imx_akcodec_tdm_fs_mul ak4458_tdm_fs_mul[] = { 142 /* 143 * Table 13 - Audio Interface Format 144 * For TDM mode, MCLK should is set to 145 * obtained from 2 * slots * slot_width 146 */ 147 { .min = 128, .max = 128, .mul = 256 }, /* TDM128 */ 148 { .min = 256, .max = 256, .mul = 512 }, /* TDM256 */ 149 { .min = 512, .max = 512, .mul = 1024 }, /* TDM512 */ 150 }; 151 152 static struct imx_akcodec_fs_mul ak4497_fs_mul[] = { 153 /** 154 * Table 7 - mapping multiplier and speed mode 155 * Tables 8 & 9 - mapping speed mode and LRCK fs 156 */ 157 { .rmin = 8000, .rmax = 32000, .wmin = 256, .wmax = 1024, }, /* Normal, <= 32kHz */ 158 { .rmin = 44100, .rmax = 48000, .wmin = 256, .wmax = 512, }, /* Normal */ 159 { .rmin = 88200, .rmax = 96000, .wmin = 256, .wmax = 256, }, /* Double */ 160 { .rmin = 176400, .rmax = 192000, .wmin = 128, .wmax = 128, }, /* Quad */ 161 { .rmin = 352800, .rmax = 384000, .wmin = 128, .wmax = 128, }, /* Oct */ 162 { .rmin = 705600, .rmax = 768000, .wmin = 64, .wmax = 64, }, /* Hex */ 163 }; 164 165 /* 166 * Auto MCLK selection based on LRCK for Normal Mode 167 * (Table 4 from datasheet) 168 */ 169 static struct imx_akcodec_fs_mul ak5558_fs_mul[] = { 170 { .rmin = 8000, .rmax = 32000, .wmin = 512, .wmax = 1024, }, 171 { .rmin = 44100, .rmax = 48000, .wmin = 512, .wmax = 512, }, 172 { .rmin = 88200, .rmax = 96000, .wmin = 256, .wmax = 256, }, 173 { .rmin = 176400, .rmax = 192000, .wmin = 128, .wmax = 128, }, 174 { .rmin = 352800, .rmax = 384000, .wmin = 64, .wmax = 64, }, 175 { .rmin = 705600, .rmax = 768000, .wmin = 32, .wmax = 32, }, 176 }; 177 178 /* 179 * MCLK and BCLK selection based on TDM mode 180 * because of SAI we also add the restriction: MCLK >= 2 * BCLK 181 * (Table 9 from datasheet) 182 */ 183 static struct imx_akcodec_tdm_fs_mul ak5558_tdm_fs_mul[] = { 184 { .min = 128, .max = 128, .mul = 256 }, 185 { .min = 256, .max = 256, .mul = 512 }, 186 { .min = 512, .max = 512, .mul = 1024 }, 187 }; 188 189 static const u32 akcodec_rates[] = { 190 8000, 11025, 16000, 22050, 32000, 44100, 48000, 88200, 191 96000, 176400, 192000, 352800, 384000, 705600, 768000, 192 }; 193 194 static const u32 akcodec_tdm_rates[] = { 195 8000, 16000, 32000, 48000, 96000, 196 }; 197 198 static const u32 ak4458_channels[] = { 199 1, 2, 4, 6, 8, 10, 12, 14, 16, 200 }; 201 202 static const u32 ak4458_tdm_channels[] = { 203 1, 2, 3, 4, 5, 6, 7, 8, 16, 204 }; 205 206 static const u32 ak5558_channels[] = { 207 1, 2, 4, 6, 8, 208 }; 209 210 static const u32 ak5558_tdm_channels[] = { 211 1, 2, 3, 4, 5, 6, 7, 8, 212 }; 213 214 static bool format_is_dsd(struct snd_pcm_hw_params *params) 215 { 216 snd_pcm_format_t format = params_format(params); 217 218 switch (format) { 219 case SNDRV_PCM_FORMAT_DSD_U8: 220 case SNDRV_PCM_FORMAT_DSD_U16_LE: 221 case SNDRV_PCM_FORMAT_DSD_U16_BE: 222 case SNDRV_PCM_FORMAT_DSD_U32_LE: 223 case SNDRV_PCM_FORMAT_DSD_U32_BE: 224 return true; 225 default: 226 return false; 227 } 228 } 229 230 static bool format_is_tdm(struct dai_link_data *link_data) 231 { 232 if (link_data->slots > 2) 233 return true; 234 else 235 return false; 236 } 237 238 static bool codec_is_akcodec(unsigned int type) 239 { 240 switch (type) { 241 case CODEC_AK4458: 242 case CODEC_AK4497: 243 case CODEC_AK5558: 244 case CODEC_AK5552: 245 return true; 246 default: 247 break; 248 } 249 return false; 250 } 251 252 static unsigned long akcodec_get_mclk_rate(struct snd_pcm_substream *substream, 253 struct snd_pcm_hw_params *params, 254 int slots, int slot_width) 255 { 256 struct snd_soc_pcm_runtime *rtd = substream->private_data; 257 struct imx_card_data *data = snd_soc_card_get_drvdata(rtd->card); 258 const struct imx_card_plat_data *plat_data = data->plat_data; 259 struct dai_link_data *link_data = &data->link_data[rtd->num]; 260 unsigned int width = slots * slot_width; 261 unsigned int rate = params_rate(params); 262 int i; 263 264 if (format_is_tdm(link_data)) { 265 for (i = 0; i < plat_data->num_tdm_fs_mul; i++) { 266 /* min = max = slots * slots_width */ 267 if (width != plat_data->tdm_fs_mul[i].min) 268 continue; 269 return rate * plat_data->tdm_fs_mul[i].mul; 270 } 271 } else { 272 for (i = 0; i < plat_data->num_fs_mul; i++) { 273 if (rate >= plat_data->fs_mul[i].rmin && 274 rate <= plat_data->fs_mul[i].rmax) { 275 width = max(width, plat_data->fs_mul[i].wmin); 276 width = min(width, plat_data->fs_mul[i].wmax); 277 278 /* Adjust SAI bclk:mclk ratio */ 279 width *= link_data->one2one_ratio ? 1 : 2; 280 281 return rate * width; 282 } 283 } 284 } 285 286 /* Let DAI manage clk frequency by default */ 287 return 0; 288 } 289 290 static int imx_aif_hw_params(struct snd_pcm_substream *substream, 291 struct snd_pcm_hw_params *params) 292 { 293 struct snd_soc_pcm_runtime *rtd = substream->private_data; 294 struct snd_soc_dai *cpu_dai = asoc_rtd_to_cpu(rtd, 0); 295 struct snd_soc_card *card = rtd->card; 296 struct imx_card_data *data = snd_soc_card_get_drvdata(card); 297 struct dai_link_data *link_data = &data->link_data[rtd->num]; 298 struct imx_card_plat_data *plat_data = data->plat_data; 299 struct device *dev = card->dev; 300 struct snd_soc_dai *codec_dai; 301 unsigned long mclk_freq; 302 unsigned int fmt = rtd->dai_link->dai_fmt; 303 unsigned int slots, slot_width; 304 int ret, i; 305 306 slots = link_data->slots; 307 slot_width = link_data->slot_width; 308 309 if (!format_is_tdm(link_data)) { 310 if (format_is_dsd(params)) { 311 slots = 1; 312 slot_width = params_width(params); 313 fmt = (rtd->dai_link->dai_fmt & ~SND_SOC_DAIFMT_FORMAT_MASK) | 314 SND_SOC_DAIFMT_PDM; 315 } else { 316 slots = 2; 317 slot_width = params_physical_width(params); 318 fmt = (rtd->dai_link->dai_fmt & ~SND_SOC_DAIFMT_FORMAT_MASK) | 319 SND_SOC_DAIFMT_I2S; 320 } 321 } 322 323 ret = snd_soc_dai_set_fmt(cpu_dai, snd_soc_daifmt_clock_provider_flipped(fmt)); 324 if (ret && ret != -ENOTSUPP) { 325 dev_err(dev, "failed to set cpu dai fmt: %d\n", ret); 326 return ret; 327 } 328 ret = snd_soc_dai_set_tdm_slot(cpu_dai, 329 BIT(slots) - 1, 330 BIT(slots) - 1, 331 slots, slot_width); 332 if (ret && ret != -ENOTSUPP) { 333 dev_err(dev, "failed to set cpu dai tdm slot: %d\n", ret); 334 return ret; 335 } 336 337 for_each_rtd_codec_dais(rtd, i, codec_dai) { 338 ret = snd_soc_dai_set_fmt(codec_dai, fmt); 339 if (ret && ret != -ENOTSUPP) { 340 dev_err(dev, "failed to set codec dai[%d] fmt: %d\n", i, ret); 341 return ret; 342 } 343 344 ret = snd_soc_dai_set_tdm_slot(codec_dai, 345 BIT(slots) - 1, 346 BIT(slots) - 1, 347 slots, slot_width); 348 if (ret && ret != -ENOTSUPP) { 349 dev_err(dev, "failed to set codec dai[%d] tdm slot: %d\n", i, ret); 350 return ret; 351 } 352 } 353 354 /* Set MCLK freq */ 355 if (codec_is_akcodec(plat_data->type)) 356 mclk_freq = akcodec_get_mclk_rate(substream, params, slots, slot_width); 357 else 358 mclk_freq = params_rate(params) * slots * slot_width; 359 360 if (format_is_dsd(params)) { 361 /* Use the maximum freq from DSD512 (512*44100 = 22579200) */ 362 if (!(params_rate(params) % 11025)) 363 mclk_freq = IMX_CARD_MCLK_22P5792MHZ; 364 else 365 mclk_freq = IMX_CARD_MCLK_24P576MHZ; 366 } 367 368 ret = snd_soc_dai_set_sysclk(cpu_dai, link_data->cpu_sysclk_id, mclk_freq, 369 SND_SOC_CLOCK_OUT); 370 if (ret && ret != -ENOTSUPP) { 371 dev_err(dev, "failed to set cpui dai mclk1 rate (%lu): %d\n", mclk_freq, ret); 372 return ret; 373 } 374 375 return 0; 376 } 377 378 static int ak5558_hw_rule_rate(struct snd_pcm_hw_params *p, struct snd_pcm_hw_rule *r) 379 { 380 struct dai_link_data *link_data = r->private; 381 struct snd_interval t = { .min = 8000, .max = 8000, }; 382 unsigned long mclk_freq; 383 unsigned int fs; 384 int i; 385 386 fs = hw_param_interval(p, SNDRV_PCM_HW_PARAM_SAMPLE_BITS)->min; 387 fs *= link_data->slots; 388 389 /* Identify maximum supported rate */ 390 for (i = 0; i < ARRAY_SIZE(akcodec_rates); i++) { 391 mclk_freq = fs * akcodec_rates[i]; 392 /* Adjust SAI bclk:mclk ratio */ 393 mclk_freq *= link_data->one2one_ratio ? 1 : 2; 394 395 /* Skip rates for which MCLK is beyond supported value */ 396 if (mclk_freq > 36864000) 397 continue; 398 399 if (t.max < akcodec_rates[i]) 400 t.max = akcodec_rates[i]; 401 } 402 403 return snd_interval_refine(hw_param_interval(p, r->var), &t); 404 } 405 406 static int imx_aif_startup(struct snd_pcm_substream *substream) 407 { 408 struct snd_pcm_runtime *runtime = substream->runtime; 409 struct snd_soc_pcm_runtime *rtd = substream->private_data; 410 struct snd_soc_card *card = rtd->card; 411 struct imx_card_data *data = snd_soc_card_get_drvdata(card); 412 struct dai_link_data *link_data = &data->link_data[rtd->num]; 413 static struct snd_pcm_hw_constraint_list constraint_rates; 414 static struct snd_pcm_hw_constraint_list constraint_channels; 415 int ret = 0; 416 417 if (format_is_tdm(link_data)) { 418 constraint_channels.list = data->plat_data->support_tdm_channels; 419 constraint_channels.count = data->plat_data->num_tdm_channels; 420 constraint_rates.list = data->plat_data->support_tdm_rates; 421 constraint_rates.count = data->plat_data->num_tdm_rates; 422 } else { 423 constraint_channels.list = data->plat_data->support_channels; 424 constraint_channels.count = data->plat_data->num_channels; 425 constraint_rates.list = data->plat_data->support_rates; 426 constraint_rates.count = data->plat_data->num_rates; 427 } 428 429 if (constraint_channels.count) { 430 ret = snd_pcm_hw_constraint_list(runtime, 0, 431 SNDRV_PCM_HW_PARAM_CHANNELS, 432 &constraint_channels); 433 if (ret) 434 return ret; 435 } 436 437 if (constraint_rates.count) { 438 ret = snd_pcm_hw_constraint_list(runtime, 0, 439 SNDRV_PCM_HW_PARAM_RATE, 440 &constraint_rates); 441 if (ret) 442 return ret; 443 } 444 445 if (data->plat_data->type == CODEC_AK5558) 446 ret = snd_pcm_hw_rule_add(substream->runtime, 0, 447 SNDRV_PCM_HW_PARAM_RATE, 448 ak5558_hw_rule_rate, link_data, 449 SNDRV_PCM_HW_PARAM_SAMPLE_BITS, -1); 450 451 return ret; 452 } 453 454 static const struct snd_soc_ops imx_aif_ops = { 455 .hw_params = imx_aif_hw_params, 456 .startup = imx_aif_startup, 457 }; 458 459 static const struct snd_soc_ops imx_aif_ops_be = { 460 .hw_params = imx_aif_hw_params, 461 }; 462 463 static int be_hw_params_fixup(struct snd_soc_pcm_runtime *rtd, 464 struct snd_pcm_hw_params *params) 465 { 466 struct snd_soc_card *card = rtd->card; 467 struct imx_card_data *data = snd_soc_card_get_drvdata(card); 468 struct snd_interval *rate; 469 struct snd_mask *mask; 470 471 rate = hw_param_interval(params, SNDRV_PCM_HW_PARAM_RATE); 472 rate->max = data->asrc_rate; 473 rate->min = data->asrc_rate; 474 475 mask = hw_param_mask(params, SNDRV_PCM_HW_PARAM_FORMAT); 476 snd_mask_none(mask); 477 snd_mask_set(mask, (__force unsigned int)data->asrc_format); 478 479 return 0; 480 } 481 482 static int imx_card_parse_of(struct imx_card_data *data) 483 { 484 struct imx_card_plat_data *plat_data = data->plat_data; 485 struct snd_soc_card *card = &data->card; 486 struct snd_soc_dai_link_component *dlc; 487 struct device_node *platform = NULL; 488 struct device_node *codec = NULL; 489 struct device_node *cpu = NULL; 490 struct device_node *np; 491 struct device *dev = card->dev; 492 struct snd_soc_dai_link *link; 493 struct dai_link_data *link_data; 494 struct of_phandle_args args; 495 int ret, num_links; 496 u32 asrc_fmt = 0; 497 u32 width; 498 499 ret = snd_soc_of_parse_card_name(card, "model"); 500 if (ret) { 501 dev_err(dev, "Error parsing card name: %d\n", ret); 502 return ret; 503 } 504 505 /* DAPM routes */ 506 if (of_property_read_bool(dev->of_node, "audio-routing")) { 507 ret = snd_soc_of_parse_audio_routing(card, "audio-routing"); 508 if (ret) 509 return ret; 510 } 511 512 /* Populate links */ 513 num_links = of_get_child_count(dev->of_node); 514 515 /* Allocate the DAI link array */ 516 card->dai_link = devm_kcalloc(dev, num_links, sizeof(*link), GFP_KERNEL); 517 if (!card->dai_link) 518 return -ENOMEM; 519 520 data->link_data = devm_kcalloc(dev, num_links, sizeof(*link), GFP_KERNEL); 521 if (!data->link_data) 522 return -ENOMEM; 523 524 card->num_links = num_links; 525 link = card->dai_link; 526 link_data = data->link_data; 527 528 for_each_child_of_node(dev->of_node, np) { 529 dlc = devm_kzalloc(dev, 2 * sizeof(*dlc), GFP_KERNEL); 530 if (!dlc) { 531 ret = -ENOMEM; 532 goto err_put_np; 533 } 534 535 link->cpus = &dlc[0]; 536 link->platforms = &dlc[1]; 537 538 link->num_cpus = 1; 539 link->num_platforms = 1; 540 541 ret = of_property_read_string(np, "link-name", &link->name); 542 if (ret) { 543 dev_err(card->dev, "error getting codec dai_link name\n"); 544 goto err_put_np; 545 } 546 547 cpu = of_get_child_by_name(np, "cpu"); 548 if (!cpu) { 549 dev_err(dev, "%s: Can't find cpu DT node\n", link->name); 550 ret = -EINVAL; 551 goto err; 552 } 553 554 ret = of_parse_phandle_with_args(cpu, "sound-dai", 555 "#sound-dai-cells", 0, &args); 556 if (ret) { 557 dev_err(card->dev, "%s: error getting cpu phandle\n", link->name); 558 goto err; 559 } 560 561 if (of_node_name_eq(args.np, "sai")) { 562 /* sai sysclk id */ 563 link_data->cpu_sysclk_id = FSL_SAI_CLK_MAST1; 564 565 /* sai may support mclk/bclk = 1 */ 566 if (of_find_property(np, "fsl,mclk-equal-bclk", NULL)) { 567 link_data->one2one_ratio = true; 568 } else { 569 int i; 570 571 /* 572 * i.MX8MQ don't support one2one ratio, then 573 * with ak4497 only 16bit case is supported. 574 */ 575 for (i = 0; i < ARRAY_SIZE(ak4497_fs_mul); i++) { 576 if (ak4497_fs_mul[i].rmin == 705600 && 577 ak4497_fs_mul[i].rmax == 768000) { 578 ak4497_fs_mul[i].wmin = 32; 579 ak4497_fs_mul[i].wmax = 32; 580 } 581 } 582 } 583 } 584 585 link->cpus->of_node = args.np; 586 link->platforms->of_node = link->cpus->of_node; 587 link->id = args.args[0]; 588 589 ret = snd_soc_of_get_dai_name(cpu, &link->cpus->dai_name); 590 if (ret) { 591 dev_err_probe(card->dev, ret, 592 "%s: error getting cpu dai name\n", link->name); 593 goto err; 594 } 595 596 codec = of_get_child_by_name(np, "codec"); 597 if (codec) { 598 ret = snd_soc_of_get_dai_link_codecs(dev, codec, link); 599 if (ret < 0) { 600 dev_err_probe(dev, ret, "%s: codec dai not found\n", 601 link->name); 602 goto err; 603 } 604 605 plat_data->num_codecs = link->num_codecs; 606 607 /* Check the akcodec type */ 608 if (!strcmp(link->codecs->dai_name, "ak4458-aif")) 609 plat_data->type = CODEC_AK4458; 610 else if (!strcmp(link->codecs->dai_name, "ak4497-aif")) 611 plat_data->type = CODEC_AK4497; 612 else if (!strcmp(link->codecs->dai_name, "ak5558-aif")) 613 plat_data->type = CODEC_AK5558; 614 else if (!strcmp(link->codecs->dai_name, "ak5552-aif")) 615 plat_data->type = CODEC_AK5552; 616 617 } else { 618 dlc = devm_kzalloc(dev, sizeof(*dlc), GFP_KERNEL); 619 if (!dlc) { 620 ret = -ENOMEM; 621 goto err; 622 } 623 624 link->codecs = dlc; 625 link->num_codecs = 1; 626 627 link->codecs->dai_name = "snd-soc-dummy-dai"; 628 link->codecs->name = "snd-soc-dummy"; 629 } 630 631 if (!strncmp(link->name, "HiFi-ASRC-FE", 12)) { 632 /* DPCM frontend */ 633 link->dynamic = 1; 634 link->dpcm_merged_chan = 1; 635 636 ret = of_property_read_u32(args.np, "fsl,asrc-rate", &data->asrc_rate); 637 if (ret) { 638 dev_err(dev, "failed to get output rate\n"); 639 ret = -EINVAL; 640 goto err; 641 } 642 643 ret = of_property_read_u32(args.np, "fsl,asrc-format", &asrc_fmt); 644 data->asrc_format = (__force snd_pcm_format_t)asrc_fmt; 645 if (ret) { 646 /* Fallback to old binding; translate to asrc_format */ 647 ret = of_property_read_u32(args.np, "fsl,asrc-width", &width); 648 if (ret) { 649 dev_err(dev, 650 "failed to decide output format\n"); 651 goto err; 652 } 653 654 if (width == 24) 655 data->asrc_format = SNDRV_PCM_FORMAT_S24_LE; 656 else 657 data->asrc_format = SNDRV_PCM_FORMAT_S16_LE; 658 } 659 } else if (!strncmp(link->name, "HiFi-ASRC-BE", 12)) { 660 /* DPCM backend */ 661 link->no_pcm = 1; 662 link->platforms->of_node = NULL; 663 link->platforms->name = "snd-soc-dummy"; 664 665 link->be_hw_params_fixup = be_hw_params_fixup; 666 link->ops = &imx_aif_ops_be; 667 } else { 668 link->ops = &imx_aif_ops; 669 } 670 671 if (link->no_pcm || link->dynamic) 672 snd_soc_dai_link_set_capabilities(link); 673 674 /* Get dai fmt */ 675 ret = asoc_simple_parse_daifmt(dev, np, codec, 676 NULL, &link->dai_fmt); 677 if (ret) 678 link->dai_fmt = SND_SOC_DAIFMT_NB_NF | 679 SND_SOC_DAIFMT_CBC_CFC | 680 SND_SOC_DAIFMT_I2S; 681 682 /* Get tdm slot */ 683 snd_soc_of_parse_tdm_slot(np, NULL, NULL, 684 &link_data->slots, 685 &link_data->slot_width); 686 /* default value */ 687 if (!link_data->slots) 688 link_data->slots = 2; 689 690 if (!link_data->slot_width) 691 link_data->slot_width = 32; 692 693 link->ignore_pmdown_time = 1; 694 link->stream_name = link->name; 695 link++; 696 link_data++; 697 698 of_node_put(cpu); 699 of_node_put(codec); 700 of_node_put(platform); 701 702 cpu = NULL; 703 codec = NULL; 704 platform = NULL; 705 } 706 707 return 0; 708 err: 709 of_node_put(cpu); 710 of_node_put(codec); 711 of_node_put(platform); 712 err_put_np: 713 of_node_put(np); 714 return ret; 715 } 716 717 static int imx_card_probe(struct platform_device *pdev) 718 { 719 struct snd_soc_dai_link *link_be = NULL, *link; 720 struct imx_card_plat_data *plat_data; 721 struct imx_card_data *data; 722 int ret, i; 723 724 data = devm_kzalloc(&pdev->dev, sizeof(*data), GFP_KERNEL); 725 if (!data) 726 return -ENOMEM; 727 728 plat_data = devm_kzalloc(&pdev->dev, sizeof(*plat_data), GFP_KERNEL); 729 if (!plat_data) 730 return -ENOMEM; 731 732 data->plat_data = plat_data; 733 data->card.dev = &pdev->dev; 734 735 dev_set_drvdata(&pdev->dev, &data->card); 736 snd_soc_card_set_drvdata(&data->card, data); 737 ret = imx_card_parse_of(data); 738 if (ret) 739 return ret; 740 741 data->num_dapm_routes = plat_data->num_codecs + 1; 742 data->dapm_routes = devm_kcalloc(&pdev->dev, data->num_dapm_routes, 743 sizeof(struct snd_soc_dapm_route), 744 GFP_KERNEL); 745 if (!data->dapm_routes) 746 return -ENOMEM; 747 748 /* configure the dapm routes */ 749 switch (plat_data->type) { 750 case CODEC_AK4458: 751 case CODEC_AK4497: 752 if (plat_data->num_codecs == 1) { 753 data->dapm_routes[0].sink = "Playback"; 754 data->dapm_routes[0].source = "CPU-Playback"; 755 i = 1; 756 } else { 757 for (i = 0; i < plat_data->num_codecs; i++) { 758 data->dapm_routes[i].sink = 759 devm_kasprintf(&pdev->dev, GFP_KERNEL, "%d %s", 760 i + 1, "Playback"); 761 data->dapm_routes[i].source = "CPU-Playback"; 762 } 763 } 764 data->dapm_routes[i].sink = "CPU-Playback"; 765 data->dapm_routes[i].source = "ASRC-Playback"; 766 break; 767 case CODEC_AK5558: 768 case CODEC_AK5552: 769 if (plat_data->num_codecs == 1) { 770 data->dapm_routes[0].sink = "CPU-Capture"; 771 data->dapm_routes[0].source = "Capture"; 772 i = 1; 773 } else { 774 for (i = 0; i < plat_data->num_codecs; i++) { 775 data->dapm_routes[i].source = 776 devm_kasprintf(&pdev->dev, GFP_KERNEL, "%d %s", 777 i + 1, "Capture"); 778 data->dapm_routes[i].sink = "CPU-Capture"; 779 } 780 } 781 data->dapm_routes[i].sink = "ASRC-Capture"; 782 data->dapm_routes[i].source = "CPU-Capture"; 783 break; 784 default: 785 break; 786 } 787 788 /* default platform data for akcodecs */ 789 if (codec_is_akcodec(plat_data->type)) { 790 plat_data->support_rates = akcodec_rates; 791 plat_data->num_rates = ARRAY_SIZE(akcodec_rates); 792 plat_data->support_tdm_rates = akcodec_tdm_rates; 793 plat_data->num_tdm_rates = ARRAY_SIZE(akcodec_tdm_rates); 794 795 switch (plat_data->type) { 796 case CODEC_AK4458: 797 plat_data->fs_mul = ak4458_fs_mul; 798 plat_data->num_fs_mul = ARRAY_SIZE(ak4458_fs_mul); 799 plat_data->tdm_fs_mul = ak4458_tdm_fs_mul; 800 plat_data->num_tdm_fs_mul = ARRAY_SIZE(ak4458_tdm_fs_mul); 801 plat_data->support_channels = ak4458_channels; 802 plat_data->num_channels = ARRAY_SIZE(ak4458_channels); 803 plat_data->support_tdm_channels = ak4458_tdm_channels; 804 plat_data->num_tdm_channels = ARRAY_SIZE(ak4458_tdm_channels); 805 break; 806 case CODEC_AK4497: 807 plat_data->fs_mul = ak4497_fs_mul; 808 plat_data->num_fs_mul = ARRAY_SIZE(ak4497_fs_mul); 809 plat_data->support_channels = ak4458_channels; 810 plat_data->num_channels = ARRAY_SIZE(ak4458_channels); 811 break; 812 case CODEC_AK5558: 813 case CODEC_AK5552: 814 plat_data->fs_mul = ak5558_fs_mul; 815 plat_data->num_fs_mul = ARRAY_SIZE(ak5558_fs_mul); 816 plat_data->tdm_fs_mul = ak5558_tdm_fs_mul; 817 plat_data->num_tdm_fs_mul = ARRAY_SIZE(ak5558_tdm_fs_mul); 818 plat_data->support_channels = ak5558_channels; 819 plat_data->num_channels = ARRAY_SIZE(ak5558_channels); 820 plat_data->support_tdm_channels = ak5558_tdm_channels; 821 plat_data->num_tdm_channels = ARRAY_SIZE(ak5558_tdm_channels); 822 break; 823 default: 824 break; 825 } 826 } 827 828 /* with asrc as front end */ 829 if (data->card.num_links == 3) { 830 data->card.dapm_routes = data->dapm_routes; 831 data->card.num_dapm_routes = data->num_dapm_routes; 832 for_each_card_prelinks(&data->card, i, link) { 833 if (link->no_pcm == 1) 834 link_be = link; 835 } 836 for_each_card_prelinks(&data->card, i, link) { 837 if (link->dynamic == 1 && link_be) { 838 link->dpcm_playback = link_be->dpcm_playback; 839 link->dpcm_capture = link_be->dpcm_capture; 840 } 841 } 842 } 843 844 ret = devm_snd_soc_register_card(&pdev->dev, &data->card); 845 if (ret) 846 return dev_err_probe(&pdev->dev, ret, "snd_soc_register_card failed\n"); 847 848 return 0; 849 } 850 851 static const struct of_device_id imx_card_dt_ids[] = { 852 { .compatible = "fsl,imx-audio-card", }, 853 { }, 854 }; 855 MODULE_DEVICE_TABLE(of, imx_card_dt_ids); 856 857 static struct platform_driver imx_card_driver = { 858 .driver = { 859 .name = "imx-card", 860 .pm = &snd_soc_pm_ops, 861 .of_match_table = imx_card_dt_ids, 862 }, 863 .probe = imx_card_probe, 864 }; 865 module_platform_driver(imx_card_driver); 866 867 MODULE_DESCRIPTION("Freescale i.MX ASoC Machine Driver"); 868 MODULE_LICENSE("GPL v2"); 869 MODULE_ALIAS("platform:imx-card"); 870